I have just configured a XenServer 6.2.0 (based on CentOS) host in a server with 2 high-end processors, 256 GB RAM and SSD storage. The distribution is up to date.

We set up several virtual machines and every expected functionality is working properly but I have concers about the speed of the network communication among VMs inside the host (for example, transferring one file using scp from one VM to another).

These are the numbers I got:

Ping response time: 0.5 ms

Transfer rate (big files): 50 MB/s

I have no previous experience with virtualization technologies, so I don't know if this numbers make sense. Do they make sense? Is usually internal network that slow?

Ping is just a ping from one VM to another. Transfer rate is given by a transfer of one 1GB file from one VM to another using scp. In both cases the private network is used.
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user211430Mar 5 '14 at 9:34

What are the operating systems of the VMs?
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pepoluanMay 18 '14 at 18:54